6oo 



INDEX 



Germ-nuclei as bearers of heredi- 

 tary qualities, 58 

 Germ-plasm, persistence of, 453 

 Girou, 22, 492 

 Goethe, 113 

 Golden Rod, 180 

 Gout, transmissibility of, 182, 261 

 Grandidier, 20 

 Guaita, Von, 115, 392 

 Gulick, 536, 537 



Haacke, Dr. W., 196 



Habits and instincts, modifications 

 of, 220 



Haeckel, 32, 224, 411, 45^; on 

 transmission of acquired char- 

 acters, 195, 228 



Haecker, observations on water - 

 fleas, 52 



Haemophilia, 20, 265, 291 



Haller, Albrecht von, 401 



Hamilton, Prof. D. J., 255, 296; 

 on gout, 131, 182 ; on nervous 

 diseases, 263 ; on nerve-cells, 

 279, 284 



Hands, large and small, 210 



Hannot, 291 



Hare-lip, 288 



Hartmann, R., 227 



Hartog, Prof. M., 222 



Harvey, Dr. Alexander, on cross- 

 breeding sheep 147, 154, 155 



— William, 399, 416 



Hatschek, 103 



Heine, 249 



Herbst, Dr. Curt, experiments by, 



65 

 Herdman, Prof. W. A., 408 

 Heredity, definitions of, 15 ; re- 

 statement of central problem of, 

 38 ; and variation, 66 ; and 

 evolution, 85; and disease, 250; 

 experiments on, 380 ; and in- 

 heritance, 395 ; old theories of, 

 398 

 Hering, E., 458 



Hertwig, Prof. O., 62, 63, 186, 420, 

 424, 426, 440 



Hilaire, Etienne Geoffroy St., 83 



Hill, Dr. Leonard, 232 



His, 168, 420 



Histonal selection, 460 



Hofacker, 492 



Homochronous heredity, 19 



Horner, 272 



Horse and zebra, hybridisation of , 1 38 



Horses, reversion in, 130 ; improve- 

 ment in trotting, 207 ; colour in, 

 366 



Hurst, C. C, 356, 36s, 373 



Hutchins, D. E., 224 



Hutchinson, 261, 264, 288, 292 



Huxley, 402, 435, 442 ; on La- 

 marckian hypothesis, 172 ; an- 

 cestry of, 115 



Hybridisation in general, 385 ; of 

 distinct species, 386 ; results of, 



338, 387 

 Hybrids, splitting of, 132 

 Hypothesis of development, 444 



Idioplasm, 430 



Idios3mcrasies, physiological, 268 



Ids and idants, 434 



Immunity, 218, 296 



Individual contribution, law of 

 diminishing, i},i 



Individuated stocks, relative in- 

 fertility of, 534 



"Infection" hypothesis, 153 



Infections, 298 



Inheritance, the physical basis of, 

 26 ; dual nature of, 49, 51; in 

 cases of parthenogenesis, 57 ; 

 unilateral, 112 ; " crossed," 113 ; 

 particulate, 115 ; Mendelian, 118 ; 

 statistical study of, 309 ; law 

 of ancestral, 323 



Innate and acquired diseases, 258 



Integral division, 424, 446 



Intercrossing, swamping effects of, 

 372 



